Method of treating paper wrapping strip



, softened with soap.

. these rolls have object of my about 260 Patented Dec. 27, 1932 UNITED STATES PATENT OFFICE JOSEPH A. KENNEDY, F IPAWT'UCK ET, RHODE ISLAND, ASSIGNOB TO ANAGONDA 'W'IBE AND CABLE COMPANY, 01 NEW YORK,

N. 'Y., A'CORPOBATION OF DELAWARE METHOD OF TREATING PAPER WRAPPING STRIP Ho Drawing.

which in its contact with the edges ofthe strip is liable to break the edges thereof and interfere with the successful passage of the strip therethrough or even to tear the strip apart unless the edges are soft and pliable.

In preparing this strip for use the paper is rolled up and cut to form rolls of strip 1" wide and 4? in diameter. Heretofore been immersed in a bath of special wax to partially impregnate the paper therewith, after which they are placed in a closed receptacle and subjected to steaming. The steam melts the wax at the edges of the strip and these edges absorb moisture which acts to force the wax farther into the strip and relieve the stiffness of the paper and permit easy folding thereof. I This treatment requires the use of a special high grade wax, which adds considerablyto t e expense of the treatment. It is the primary invention to provide an improved and cheaper method of so treating these strip rolls with any wax, including-the cheapest grade, that the edges of the strip are permanentl bio and of a lu ricated nature for smoother en agement with the die.

n accordance with my invention, I provide a wax bath, using any grade of wax, preferably a low price turing economy, and immerse the rolls therein for a period of a while keepin the ath at a temperature of This treatment saturates the 'aper with the wax through the entire roll. then, preferably immediately, drop the rolls into a hot soap bath, i. e. hot water The soap which I have used and which I prefer to use in my im- 59 proved process is. commonly sold on the Application filed may 19,

rendered softer, more plia-' grade for manufacproximately ten minutes 1930. Serial 1W0. 453,717.

market and at thepresent time is known to the trade as red oil fig soap. Other soaps might serve the purpose, but I have preferred this fig soap since it does not readil harden like common household soaps. is socalled red oil fig soa may be obtained in the open market. 0 so-called red oil fig soap comprises approximately 48% oleic acid, 7 potassium hydroxide and has a water content ranging from 43% to 45%.

In this treatment the soap permeates the wax and the edges of the strip and renders such edges softer and more pliable. The displacing of a large portion of the wax by the soap and the combining of the soap with a portion of the wax provides a lubricant on the edges of the strip, and this lubricant and the pliability of the edges are permanent, since the soap does not evaporate. The stillness of and the strain on the paper is thus relieved and permits a smooth engagement of the strip edges with the die and the easy folding of the strip. a

I am aware that attempts have been made heretofore to use a cheap wax for this process and that such attempts have not only failed but that the use of even the hi her grades and more expensive waxes have en possible only when following the treatment with the steaming process heretofore referred to. My improved process not only permits the use of the cheapest grades of wax but considerably simplifies and cheapens the process by eliminating the steaming operation. Furthermore, my improved process produces an improved paper strip which is more pliable, more easily folded and with edges so permanently lubricated and smooth as to entirely eliminate any and all difliculties heretofore. experienced in passing. th

strip through the folding die.

I claim:

1. A method of processing rolls of paper strip to be used as wrapping in the manufacture of insulated conductors, consisting of treating the rolls in a bath of wax to saturate the paper, and thereafter treating the rolls in an aqueous soap solution to permeate and partially displace the wax with the soap at the edges of the strip to render such edges soft and pliable.

2. A, method of processing rolls of pa er strip to be used as wrapping in the manu acture of insulated conductors, consisting of treating the rolls in a bath of wax tosaturate the paper, and thereafter treating the rolls in an aqueous solution of non-hardening soap to permeate and partially displace the wax with the soap at the edges of the strip to render such edges soft and pliable.

3. A method of strip to be used as wrapping in the manufacture of insulated conductors, consisting of treating the rolls in a bath of wax to saturate the aper, and thereafter treating the rolls in a g soap solution to permeate and partially displace the wax with the soap at the edges of the strip to render such edges soft and pliable.

4. A method of processing rolls of paper strip to be used as wrapping in the manufacture of insulated conductors, consisting of soaking the rolls in a hot wax bath to saturate the paper, and thereafter soaking the rolls in a hot solution of non-hardening soap to permeate and partially displace the wax with the soap at the edges of the strip. a

5. A method of processing rolls of paper strip to be used as wrapping in treating the rolls in a bath of wax to saturate the paper, and immediately thereafter placing the rolls in a and partially displace the wax with the soap at the edges of the strip to render such. edges soft and pliable.

6. A method of processing rolls of paper strip to be used as wrapping in the manufacture of insulated conductors, consisting of treating the rolls for approximately ten minutes in a hot wax bath to saturate the paper, and thereafter treating the rolls in a fig soap solution including oleic acid and potassium ydroxide to permeate and partially displace the wax with the soap at the edges of the strip to render such edges soft and pliable.

7. A method .of processing rolls of paper strip to be used as wrapping in the manufacture of insulated conductors, consisting of treating the rolls in a hot wax bath ata temperature of about 260F. to saturate the paper, and thereafter treating he rolls ina soap solution to permeate and partially displace the wax with the soap at the ed as of the strip to render such edges soft and pliable.

In testimony whereof I have aflixed my signature.

JOSEPH A. KENNEDY. I

processing rolls of paper the manufacture of insulated conductors, consisting of hot soap solution to permeate 

